US2671547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control and change maker for vending machines
Assignee: Guardian Electric Manufacturing Co
•
Filing: 1949-04-09
•
Granted: 1954-03-09
•
Expires: 1969-04-09
Abstract
No abstract record available.
Inventors
- 👤 Marvin G Nelsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:30
CPC Classifications
G; G07; G07F; G07F5/00; G07F5/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2075989A
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US2144568A
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GB511285A
Cited
US2354896A
Cited
US2323255A
Cited
US2271397A
Cited
US2555486A
Cited
US2491900A
Cited
US2474843A
Cited
US2619213A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-08 | 1957-09-07 | 1958-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-08 | 1961-09-07 | 1962-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-08 | 1965-09-07 | 1966-03-09 | $7700.00 | Window Closed / Lapsed |